63.44% is the change from 320 to 523
Calculation steps:
[( 523 - 320 ) ÷ 320] x 100 = 63.44%
Formula
Percentage change = [(523 - 320) / 320] x 100
Subtract the new number by the original number
523 - 320 = 203
203 ÷ 320 = 0.634375
0.634375 x 100 = 63.44%